Make new input event groups auto-expanded by default.

Signed-off-by: Chris Galvan <chgalvan@amazon.com>

Gems/StartingPointInput/Code/Source/InputEventGroup.h

@@ -37,6 +37,7 @@ namespace StartingPointInput
                     editContext->Class<InputEventGroup>("InputEventGroup", "Groups input bindings by the event they generate")
                         ->ClassElement(AZ::Edit::ClassElements::EditorData, "")
                             ->Attribute(AZ::Edit::Attributes::NameLabelOverride, &InputEventGroup::GetEditorText)
+                            ->Attribute(AZ::Edit::Attributes::AutoExpand, true)
                         ->DataElement(0, &InputEventGroup::m_eventName, "Event Name", "The event generated by the collection of Input Bindings")
                             ->Attribute(AZ::Edit::Attributes::ChangeNotify, AZ_CRC("RefreshAttributesAndValues"))
                         ->DataElement(0, &InputEventGroup::m_inputHandlers, "Event Generators", "Handlers that generate named events")